tools/vm/page_owner_sort.c: support sorting by tgid and update documentation

When the "page owner" information is read, the information sorted
by TGID is expected.

As a result, the following adjustments have been made:

1. Add a new -P option to sort the information of blocks by TGID in
   ascending order.

2. Adjust the order of member variables in block_list strust to avoid
   one 4 byte hole.

3. Add -P option explanation in the document.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Jiajian Ye <[email protected]>
Cc: Stephen Rothwell <[email protected]>
Cc: Yixuan Cao <[email protected]>
Cc: Zhenliang Wei <[email protected]>
Cc: Yinan Zhang <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

0 files changed, 0 insertions, 0 deletions